diff options
| author | Yuchung Cheng <ycheng@google.com> | 2017-08-01 13:22:32 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-12 19:29:08 -0700 |
| commit | 025bb7f7e92c2dc3320eefb5676e1813e3c8fa1d (patch) | |
| tree | fb6ac24ba9bd7e78a33c3f586d951af122df32cc /net/ipv4/tcp_timer.c | |
| parent | 2ab639c7e2d1f02779c8947c90d8d595f5843e52 (diff) | |
tcp: avoid setting cwnd to invalid ssthresh after cwnd reduction states
[ Upstream commit ed254971edea92c3ac5c67c6a05247a92aa6075e ]
If the sender switches the congestion control during ECN-triggered
cwnd-reduction state (CA_CWR), upon exiting recovery cwnd is set to
the ssthresh value calculated by the previous congestion control. If
the previous congestion control is BBR that always keep ssthresh
to TCP_INIFINITE_SSTHRESH, cwnd ends up being infinite. The safe
step is to avoid assigning invalid ssthresh value when recovery ends.
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/ipv4/tcp_timer.c')
0 files changed, 0 insertions, 0 deletions